We've all got a few loyalty cards in our wallets for companies that haven't yet converted to an electronic format. Not all companies have keychain sized versions of these cards, so here's an easy way to convert them down from full sized cards.

Since most of these loyalty cards work off a bar code instead of a magnetic strip, Instructables suggests cutting out just the bar code strip, punching a hole, and putting that on your keychain. You may need to write the store name on the opposite side of the keychain card if it isn't visible. Hit the link for step-by-step instructions.